Home
Products
Services
AT Certification
FAQs
Articles
Encyclopedia
Recipes
Newsletter
Links
About Us
Calendar

 

HERBAL SAFETY INFORMATION

 

For further information on using herbs safely, we recommend the following books:

Mcguffin, Michael, et al., Botanical Safety Handbook, CRC Press, Boca Raton, 1997

Blumenthal, Mark, et al., The Complete German Commission E Monographs, The American Botanical Council, Austin, TX, 1998.

 

 

ACACIA FLOWER

Acacia vera

No safety information available

 

ACACIA GUM

Acacia spp.

No safety information available

 

ALFALFA LEAF

Medicago sativa

Safe to consume when used appropriately.

 

ANISE SEED

Pimpinella anisum

Avoid during pregnancy. Some allergic reactions of skin, respiratory, gastrointestinal tract have been documented.

 

ARNICA FLOWER

Arnica montana

External use only but not on open wounds or broken skin. Can cause allergic dermatitis in sensitive persons or with prolonged use.

 

ASTRAGALUS ROOT

Astragalus membranaceus

Safe to consume when used appropriately.

 

BARBERRY ROOT

Berberis vulgaris

Avoid during pregnancy.

 

BASIL LEAF (SWEET)

Ocimum basilicum

Avoid when pregnant or nursing, not recommended for infants, toddlers or for extended periods of time.

 

BETONY HERB

Stachys officinalis

Safe to consume when used appropriately.

 

BILBERRY BERRY

Vaccinium myrtillus

Safe to consume when used appropriately.

 

BILBERRY LEAF (Blueberry)

Vaccinium myrtillus

Safe to consume when used appropriately.

 

BLACK COHOSH ROOT

Cimicifuga racemosa

Avoid when pregnant or nursing, limit use to 6 months.

 

BLACK HAW BARK

Viburnum prunifolium

Individuals with a history of kidney stones should use this herb cautiously.

 

BLACK WALNUT HULL

Juglans nigra

Prolonged use is not advised due to the presence of significant quantities of juglone. May reduce absorption of most drugs.

 

BLACK WALNUT LEAF

Juglans nigra

Prolonged use is not advised due to the presence of significant quantities of juglone. May reduce absorption of most drugs.

 

BLESSED THISTLE HERB

Cnicus benedictus

Avoid during pregnancy. High doses (more than 5.0 grams per cup of tea) may irritate the stomach and cause vomiting. Allergic reactions to this and other composites are possible.

 

BLOOD ROOT

Sanguinaria canadensis

Avoid during pregnancy. As little as one gram may cause nausea and vomiting. Sparing use is recommended for individuals with history of digestive system sensitivity. Prolonged use is not advised.

 

BLUE MALVA FLOWER

Malva sylvestris

Safe to consume when used appropriately.

 

BLUEBERRY LEAF see: BILBERRY LEAF

 

BLUE VERVAIN HERB

Verbena hastata

Avoid during pregnancy

 

BONESET HERB

Eupatorium perfoliatum

For external use only, avoid on broken skin, during pregnancy, while nursing and with history of liver disease.

 

BORAGE HERB

Borago officinalis

For external use only, avoid on broken skin, during pregnancy, while nursing and with history of liver disease. Long term use is not recommended.

 

BURDOCK ROOT

Arctium lappa

Safe to consume when used appropriately.

 

BURDOCK SEED

Arctium lappa

Safe to consume when used appropriately.

 

CALAMUS ROOT

Acorus calamus

Avoid during pregnancy.

 

CALENDULA FLOWER

Calendula officinalis

Safe to consume when used appropriately.

 

CARDAMON SEED

Elettaria cardamomum

In case of gallstones, use only after consultation with a physician.

 

CASCARA SAGRADA BARK

Rhamnus purshiana

Avoid when pregnant or nursing, with intestinal obstruction, abdominal pain of unknown origin, or any inflammatory intestinal condition (appendicitis, colitis, Crohn’s disease irritable bowel) and in children under 12 years of age. Not for long-term use of more than 8-10 days.

 

CAT'S CLAW BARK

Uncaria tomentosa

No safety information available but may be digestive irritant. One authority reports possible contraindications for pregnancy, patients undergoing skin grafts, organ transplants, hemophiliacs prescribed fresh blood plasma, simultaneous administration of certain vaccines, hormone therapies, thymus extracts, insulin, and children under three years of age.

 

CATNIP LEAF & FLOWER

Nepeta cataria

Avoid during pregnancy.

 

CATUABA BARK

Juniperus brasiliensis

No safety information available.

 

CAYENNE (AFRICAN BIRD)

Capsicum annum

Excessive internal doses may cause GI irritation in sensitive individuals, externally contraindicated on injured skin or near eyes.

 

CHAMOMILE FLOWER (GERMAN)

Matricaria recutita (M. chamomilla)

Egypt/Germany Safe to consume when used appropriately but minor side effects are recorded by several references. Highly concentrated hot tea is noted as emetic. One authority advises against daily use.

 

CHAPARRAL HERB

Larrea tridentata

Seek advice from a health care practitioner before use if you have any history of liver disease. Discontinue use if nausea, fever, fatigue, or jaundice occur (e.g., dark urine or yellow discoloration of the eyes).

 

CHASTE TREE BERRY (VITEX)

Vitex agnus-castus

Avoid during pregnancy. May counteract effectiveness of birth control pills.

 

CHICKWEED HERB

Stellaria media

Safe to consume when used appropriately.

 

CINNAMON BARK

Cinnamomum cassia

Avoid during pregnancy. Not for long term use; do not exceed recommended dose. Standard Dose: 2.0 to 4.0 grams of bark daily, as tea.

 

CLAY (GREEN ) Illite, Superfine

No safety information available.

 

CLOVE

Syzygium aromaticum

Safe to consume when used appropriately.

 

COLTSFOOT LEAF

Tussilago farfara

Avoid on broken skin, during pregnancy, while nursing and with history of liver disease. Limit use to 4-6 weeks. Do not exceed recommended dose of 1.5 to 6 grams of the fresh or dried leaf or its equivalent in finished preparations. Leaf is allowed for internal consumption by the German Commission E.

 

COMFREY LEAF

Symphytum officinale

External use only, avoid on broken skin, during pregnancy, while nursing and with history of liver disease. Limit use to 4-6 weeks per year.

 

COMFREY ROOT

Symphytum officinale

External use only, avoid on broken skin, during pregnancy, while nursing and with history of liver disease. Limit use to 4-6 weeks per year.

 

DAMIANA LEAF

Turnera aphrodisiaca

Safe to consume when used appropriately.

 

DANDELION ROOT

Taraxacum officinale

Avoid during blockage of the bile ducts, acute gallbladder inflammation, and intestinal blockage. In case of gallstones, consult physician before use.

 

DILL SEED

Anethum graveolens

Safe to consume when used appropriately.

 

DONG QUAI ROOT

Angelica sinensis

Avoid during pregnancy.

 

ECHINACEA ROOT

Echinacea angustifolia

Some authorities suggest it should not be used in autoimmune diseases.

 

ECHINACEA ROOT

Echinacea purpurea

Some authorities suggest it should not be used in autoimmune diseases.

 

ELDER BERRY

Sambucus nigra/canadensis

Safe to consume when used appropriately.

 

ELDER FLOWER

Sambucus nigra/canadensis

Safe to consume when used appropriately.

 

ELEUTHERO ROOT (SIBERIAN GINSENG)

Eleutherococcus senticosus

Safe to consume when used appropriately. Avoid during hypertension but some authorities disagree with this caution.

 

EUCALYPTUS LEAF

Eucalyptus globulus

Avoid during inflammatory diseases of the bile ducts and gastrointestinal tract and in severe liver diseases. Can be a digestive irritant. Do not use eucalyptus preparations on areas of the face and especially the nose in infants and young children.

 

EYEBRIGHT HERB

Euphrasia officinalis

Europe/Bulgaria Safe to consume when used appropriately.

 

FALSE UNICORN ROOT

Chamaelirium luteum

Avoid during pregnancy. Sparing use is recommended for individuals with history of digestive system sensitivity.

 

FENNEL SEED

Foeniculum vulgare

Safe to consume when used appropriately. In individual cases allergic reactions of skin and respiratory tract. Commission E categorizes F. vulgare as not for prolonged use without a physician’s consultation. Presumably this caution is in reference to therapeutic quantities given as 5.0-7.0 grams of seeds daily.

 

FENUGREEK SEED

Trigonella foenum-graecum

Avoid during pregnancy. Repeated external applications can result in undesirable skin reactions.

 

FEVERFEW HERB

Tanacetum partenium

Avoid during pregnancy.

 

FLAX SEED

Linum usitatissimum

Avoid during bowel obstruction. May reduce absorption of other drugs. The seeds should be preswollen with fluids prior to consumption in cases of bowel inflammation. Only the whole seed should be used by overweight people to avoid caloric absorption. Warning: Taking this product without adequate fluid may cause it to swell and block your throat or esoghagus and may cause choking. Do not take this product if you have difficulty in swallowing. If you experience chest pain, vomiting, or difficulty in swallowing or breathing after taking this product seek immediate medical attention. Directions: Take (or mix) this product (child or adult dose) with at least 8 OZ (a full glass) of water or other fluid. Taking this product without enough liquid may cause choking, see warning.

 

FRANKINCENSE GUM

Boswellia carteri

Safe to consume when used appropriately.

 

GARLIC

Alium sativum

Occasional gastrointestinal disturbance in sensitive individuals. Some authorities feel that consumption of fresh garlic in children might be dangerous and possibly contraindicated in pregnancy. The long history of garlic as a food has established it to be safe in reasonable quantities. These warnings may not apply to processed garlic products.

 

GINGER ROOT

Zingiber officinale

Safe to consume when used appropriately.

 

GINKGO LEAF

Ginkgo biloba

Safe to consume when used appropriately, possible concern with ingestion of blood thinning medications but inconclusive.

 

GINSENG RED ROOT

Panax quinquefolius

Safe to consume when used appropriately. Red Ginseng is processed by steaming and may potentiate the effects of caffeine and other stimulants. Unprocessed Ginseng is not considered as stimulating.

 

GINSENG ROOT (USA)

Panax quinquefolius

Safe to consume when used appropriately.

 

GINSENG ROOT (CHINESE)

Panax ginseng

Avoid during hypertension but some authorities disagree with this caution.

 

GINSENG ROOT (KOREAN)

Panax schinseng

Avoid during hypertension but some authorities disagree with this caution.

 

GINSENG ROOT (SIBERIAN) see: ELEUTHERO ROOT

 

GOLDEN SEAL ROOT

Hydrastis canadensis

Avoid during pregnancy. Standard Dose: Unless otherwise prescribed, three times daily: 500-1000 mg dried rhizome and root; 2.0-4.0 ml tincture (1:10, 60% ethanol); 0.3-1.0 ml liquid extract (1:1, 60% ethanol). Fresh plant may cause irritation to the mucosa.

 

GOTU KOLA HERB

Centella asiatica

Safe to consume when used appropriately.

 

GRAVEL ROOT

Eupatorium purpureum

For external use only, avoid on broken skin, during pregnancy, while nursing and with history of liver disease. Long term use is not recommended.

 

GUARANA SEED

Paullinia cupana

Not recommended for excessive or long-term use.

 

HAWTHORN BERRY

Crataegus laevigata / spp.

Safe to consume when used appropriately. May have a potentiating effect with digitalis which may necessitate a smaller dosage of digitalis. Consult a physician when symptoms continue unchanged for longer than 6 weeks or in cases of swelling of the legs. Medical diagnosis is absolutely necessary when pains occur in the region of the heart, spreading out to the arms, upper abdomen or the area around the neck, or in cases of respiratory distress (dyspnea).

 

HEARTSEASE HERB (PANSY)

Viola tricolor

Safe to consume when used appropriately.

 

HIBISCUS FLOWER

Hibiscus sabdariffa

Safe to consume when used appropriately.

 

HOPS FLOWER

Humulus lupulus

Safe to consume when used appropriately but some authorities say avoid with depression.

 

HOREHOUND HERB

Marrubium vulgare

Avoid during pregnancy.

 

HORSETAIL HERB

Equisitum arvense

Avoid during cardiac or renal dysfunction. Has potential to lead to thiamine deficiency. Powdered form not recommended for children or for prolonged use due to the inorganic silica content, though teas & extracts contain mainly organic silica in colloidal form so are not problematic in this regard.

 

HYDRANGEA ROOT

Hydrangea arborescens

Avoid long term use

 

HYSSOP HERB

Hyssopus officinalis

Avoid during pregnancy.

 

IRISH MOSS

Chondrus crispis

No safety information available.

 

JASMINE FLOWER

Jasminum odoratissimum / grandiflorum

Safe to consume when used appropriately.

 

JUNIPER BERRY

Juniperus communis

Avoid during pregnancy and inflammatory kidney disease. Limit use to 4-6 weeks in succession.

 

KAVA KAVA ROOT

Piper methysticum

Avoid during pregnancy, nursing and some kinds of depression. Not recommended for more than 3 months without medical advice. It could increase the effect of alcohol, barbiturates and some drugs used for psychological treatment and has the potential to affect motor reflexes and judgment when driving or operating heavy machinery.

 

KELP

Laminaria digitata/Ascophyllum nodosum

Avoid during hyperthyroidism. Not recommended for long term use. When taken alone, it should be accompanied with adequate liquid.

 

KOLA NUT

Cola acuminata

Avoid during pregnancy, hypertension, gastric and duodenal

ulcers. Not recommended for excessive or long-term use.

 

LAPACHO BARK (Pau D'Arco)

Tabebuia avelleneda

Safe to consume when used appropriately.

 

LAVENDER FLOWER

Lavandula angustifolia / x intermedia

Safe to consume when used appropriately.

 

LEMON VERBENA LEAF

Aloysia triphylla

Safe to consume when used appropriately.

 

LEMONGRASS

Cymbopogon citratus

Avoid during pregnancy. Allergic reactions are rare, if preparations of the herb are topically applied to the skin.

 

LICORICE ROOT

Glycyrrhiza glabra

Avoid during pregnancy, nursing, diabetes, hypertension, liver disorders, severe kidney insufficiency, and hypokalemia. Not for prolonged use (over 4 - 6 weeks) or in high doses except under supervision of a qualified health practitioner. May potentiate potassium depletion of thiazide diuretics and stimulant laxatives, as well as the action of cardiac glycosides and cortisol. May cause reversible potassium depletion and sodium retention, resulting in such symptoms as hypertension, edema, headache, and vertigo when consumed in therapeutic dosages over a prolonged period.

 

LINDEN FLOWER

Tilia europaea

Safe to consume when used appropriately.

 

LOBELIA HERB

Lobelia inflata

Avoid during pregnancy. Avoid large doses. May cause nausea and vomiting.

 

MA HUANG HERB

Ephedra sinica

Avoid during pregnancy, nursing, anorexia, bulimia, glaucoma, anxiety, impaired circulation of the cerebrum, adenoma of prostate with residual urine accumulation, pheochromocytoma and thyrotoxicosis. Not recommended for excessive or long-term use. In higher dosage side effects can be drastic increase in blood pressure, cardiac arrhythmia, development of dependency. Warning: Seek advice from a health care practitioner prior to use if you are pregnant or nursing, or if you have high blood pressure, heart or thyroid disease, diabetes, difficulty in urination due to prostate enlargement, or if taking a MAO inhibitor or any other prescription drug. Reduce or discontinue use if nervousness, tremor, irritability, headaches, sleeplessness, disturbances of urination, excessive rapid heart rate, loss of appetite or nausea occur. Not intended for use by persons under 18 years of age. Keep out of the reach of children.

 

MARJORAM LEAF

Origanum marjorana

Safe to consume when used appropriately.

 

MARSHMALLOW LEAF

Althaea officinalis

Safe to consume when used appropriately but absorption of other drugs taken simultaneously may be delayed.

 

MARSHMALLOW ROOT

Althaea officinalis

Safe to consume when used appropriately but absorption of other drugs taken simultaneously may be delayed.

 

MELISSA HERB (LEMON BALM)

Melissa officinalis

Safe to consume when used appropriately.

 

MILK THISTLE SEED

Silybum marianum

Safe to consume when used appropriately.

 

MOTHERWORT HERB

Leonorus cardiaca

Avoid during pregnancy.

 

MUGWORT HERB

Artemesia vulgaris

Avoid during pregnancy.

 

MUIRA PUAMA ROOT

Liriosma ovata

Safe to consume when used appropriately.

 

MULLEIN FLOWER

Verbascum thapsus

Safe to consume when used appropriately.

 

MULLEIN LEAF

Verbascum thapsus

Safe to consume when used appropriately.

 

MYRRH GUM

Commiphora molmol

Avoid during pregnancy & excessive uterine bleeding. Doses over 2.0-4.0 grams may cause irritation of the kidneys and diarrhea.

 

NETTLE LEAF

Urtica dioica

Safe to consume when used appropriately.

 

ORANGE FLOWER

Citrus aurantium

Safe to consume when used appropriately.

 

ORANGE PEEL

Citrus sinensis

Safe to consume when used appropriately.

 

OREGANO LEAF

Origanum vulgare

Safe to consume when used appropriately.

 

OREGON GRAPE ROOT

Mahonia aquafolium

Avoid during pregnancy.

 

ORRIS ROOT (Natural)

Iris germanica var. florentina

Safe to consume when used appropriately.

 

PAPAYA LEAF

Carica papaya

Safe to consume when used appropriately.

 

PASSION FLOWER HERB

Passiflora incarnata

Safe to consume when used appropriately.

 

PEACH TREE LEAF

Prunus persica

Not for long term use. There is concern over the Cyanogenic Glycoside Amygdalin content of ca. 1.0% in the leaf. The seed can contain as much as 8.0% amygdalin which is enough to prove fatal following even moderate consumption. Although the content in the leaf and bark is significantly less than in the seed, caution must still be observed, especially with children. Warning: To be used only under the supervision of an expert qualified in the appropriate use of this substance.

 

PENNYROYAL HERB

Mentha pulegium

Avoid during pregnancy. The leaf contains 1.0-2.0% essential oil consisting of 80.0-94.0% pulegone, a severe liver toxin when administered to rats in high dose. The notoriety of pennyroyal is due to the misuse of the essential oil. Death has been reported after consumption of as little as 15.0 ml (1/2 oz) of the oil, and in one instance, following consumption of an alcohol extract of pennyroyal herb over a two week period. The last case involved a woman who was determined postmortem to have had an ectopic pregnancy, and toxic pulegone metabolites were reported to be present in the liver.

 

PEPPERMINT LEAF

Mentha piperita

Safe to consume when used appropriately.

 

PFAFFIA ROOT (SUMA)

Pfaffia paniculata

Safe to consume when used appropriately.

 

PLANTAIN LEAF

Plantago major

Safe to consume when used appropriately.

 

PLEURISY ROOT

Asclepias tuberosa

Avoid during pregnancy, may cause nausea and vomiting.

 

PRICKLY ASH BARK

Zanthoxylum americanum

Avoid during pregnancy.

 

PYRETHRUM FLOWER

Anacyclus pyrethrum

External use only. No safety information available.

 

RASPBERRY LEAF

Rubus idaeus O USA/Bulgaria

Safe to consume when used appropriately.

 

RED CLOVER BLOSSOM

Trifolium pratense

Avoid during pregnancy.

 

RHUBARB ROOT

Rheum palmatum

Avoid during pregnancy, nursing, intestinal obstruction, abdominal pain of unknown origin, or any inflammatory condition of the intestines (appendicitis, colitis, Crohn’s disease, irritable bowel, etc.) Not for children less than 12 years of age and not for long-term use in excess of 8-10 days. Individuals with a history of kidney stones should use this herb cautiously. Standard Dose: 1.0-5.0 grams daily, directly consumed or decocted as a tea, or up to 12.0 grams daily according to traditional Chinese authors. Warning for use of herb alone or in sufficient quantity in product: Do not use this product if you have abdominal pain or diarrhea. Consult a health care provider prior to use if you are pregnant or nursing. Discontinue use in the event of diarrhea or watery stools. Do not exceed recommended dose. Not for long-term use.

 

ROSE BUD & PETAL (RED)

Rosa centifolia/gallica

Safe to consume when used appropriately.

 

ROSE HIP seedless

Rosa canina

Safe to consume when used appropriately.

 

ROSEMARY LEAF

Rosmarinus officinalis

Avoid during pregnancy.

 

SAFFLOWER FLOWER

Carthamus tinctorius

Avoid during pregnancy, hemorrhagic diseases or peptic ulcers. May prolong blood coagulation time.

 

SAGE LEAF

Salvia officinalis

Avoid during pregnancy. Not for long term use, do not exceed recommended dose.

Standard Dose: 4.0-6.0 grams daily.

 

SAGE LEAF (WHITE)

Salvia apiana

No safety information available.

 

SARSAPARILLA ROOT

Smilax medica

Safe to consume when used appropriately. Some authorities warn it leads to gastric irritation and temp-orary kidney impairment and advise of potential drug interactions with hypnotics, digitalis glycosides, and bismuth.

 

SASSAFRAS ROOT BARK

Sassafras albidium

Not for long term use; do not exceed recommended dose. Standard Dose: 10.0 grams of the root bark; 2.0-4.0 ml of an liquid extract of root bark.

 

SAW PALMETTO BERRY

Serenoa repens

Safe to consume when used appropriately. Regular consultation with a physician is advised when using this herb for treatment of enlarged prostate.

 

SCULLCAP HERB

Scutellaria lateriflora

Safe to consume when used appropriately.

 

SENNA LEAF

Senna spp.

Avoid during pregnancy, nursing, intestinal obstruction, abdominal pain of unknown origin, hemorrhoids or any inflammatory condition of the intestines (appendicitis, colitis, Crohn’s disease, irritable bowel, etc.) Not for children less than 12 years of age and not for long-term use in excess of 8-10 days. Standard Dose: Dried leaf: 0.5-3.0 grams infused in hot (not boiling) water for 10-15 minutes or in cold water for 10-12 hours. Warning for use of herb alone or in sufficient quantity in product: Do not use this product if you have abdominal pain or diarrhea. Consult a health care provider prior to use if you are pregnant or nursing. Discontinue use in the event of diarrhea or watery stools. Do not exceed recommended dose. Not for long-term use.

 

SHEEP SORREL HERB

Rumex acetosella

Individuals with a history of kidney stones should use this herb cautiously.

 

SLIPPERY ELM BARK (INNER)

Ulmus fulva

Safe to consume when used appropriately.

 

SPEARMINT LEAF

Mentha spicata

Safe to consume when used appropriately.

 

SQUAW VINE HERB

Mitchella repens

Safe to consume when used appropriately.

 

ST. JOHN'S WORT HERB & FLOWER

Hypericum perforatum

May potentiate pharmaceutical MAO-inhibitors, fair-skinned people should avoid excessive sunlight and tanning while using.

 

STEVIA LEAF

Stevia rebaudiana

Safe to consume when used appropriately.

 

STEVIA WHITE EXTRACT

Stevia rebaudiana

Safe to consume when used appropriately.

 

STONE ROOT

Collinsonia canadensis

Safe to consume when used appropriately.

 

SWEET WOODRUFF HERB

Galium odoratum

Safe to consume when used appropriately but use is reported to sometimes result in headaches.

 

TANSY HERB

Tanacetum vulgare

To be used only under the supervision of an expert qualified in the appropriate use of this substance. Avoid during pregnancy, pelvic inflammatory disease and excessive menstrual bleeding. Because of the variable thujone content, uncontrolled usage of tansy, depending on the qualilty of the herb, can result in absorption of thujone in toxic amounts, even at normal dosages.

 

TEA, GREEN

Camellia sinensis

Green, unfermented tea is the world’s second most popular beverage, after water! Contains 0.9-5.0% caffeine, not recommended for excessive use. May be irritating to the digestive system.

 

THUJA LEAF (ARBOR VITAE)

Thuja occidentalis

Avoid during pregnancy, pelvic inflammatory disease and excessive menstrual bleeding. Because of the thujone content, avoid long-term use, do not exceed recommended dose of 2.0-4.0 ml liquid extract, which should be taken internally only occasionally. Aqueous forms such as tea are low in thujone.

 

THYME LEAF

Thymus vulgaris

Safe to consume when used appropriately.

 

TURMERIC ROOT

Curcuma longa

Avoid during pregnancy, bile duct obstruction, gall stones, stomach ulcers, hyperacidity.

 

UVA URSI LEAF

Arctostaphylos uva ursi

Avoid during pregnancy, nursing, kidney disorders, irritated digestive conditions and with acidic urine or in conjunction with drugs which produce acidic urine because it reduces antibacterial effect. Not for prolonged use without consulting a practitioner.

 

VALERIAN ROOT

Valariana officinalis

Safe to consume when used appropriately.

 

VIOLET LEAF

Viola odorata

Safe to consume when used appropriately.

 

WHITE OAK BARK

Quercus alba

Avoid external use with extensive skin surface damage. Full baths with a significant amount of the tea are contraindicated in the following conditions: weeping eczema and skin damage over a large area; febrile and infectious disorders; cardiac insufficiency stages III and IV; hypertonia stage IV.

 

WHITE WILLOW BARK

Salix alba

May be irritating to the digestive system. Persons with known sensitivity to aspirin may wish to exercise caution although there is no evidence these type reactions have ever occurred with the natural preparations from Salix spp. There is some assurance aspirin’s tendency to potentiate blood thinning drugs is not mimicked Salix spp.

 

WILD CHERRY BARK

Prunus serotina

Not for long-term use; do not exceed recommended dose of 2.0-4.0 grams

 

WILD LETTUCE HERB

Lactuca spp.

Safe to consume when used appropriately. Large doses of the tincture can produce vomiting.

 

WILD YAM ROOT

Dioscorea villosa

Safe to consume when used appropriately. Large doses of the tincture can produce vomiting.

 

WINTERGREEN LEAF

Gaultheria procumbens

Persons with known sensitivity to aspirin may wish to exercise caution although there is no evidence these type reactions have ever occurred with the natural preparations from Gaultheria. There is some assurance aspirin’s tendency to potentiate blood thinning drugs is not mimicked Gaultheria.

 

WITCH HAZEL BARK

Hamamelis virginiana

Safe to consume when used appropriately. In susceptible patients, irritation of the stomach may occur occasionally. In rare cases, witch-hazel tannins may cause liver damage.

 

WITCH HAZEL LEAF

Hamamelis virginiana

Safe to consume when used appropriately. In susceptible patients, irritation of the stomach may occur occasionally. In rare cases, witch-hazel tannins may cause liver damage.

 

WORMWOOD HERB

Artemisia absinthium

Avoid during pregnancy, nursing, pelvic inflammatory disease and excessive menstrual bleeding. Not for long term use; do not exceed recommended dose of 1.5 grams of dried herb in tea, 2 to 3 times daily. Thujone, a constituent of Wormwood, is neurotoxic but the primary references do not substantiate toxicological concern, except with long-term use, excessive dose (which is more likely with an extract), or use of the essential oil.

 

YARROW FLOWER

Achillea millefolium

Avoid during pregnancy, pelvic inflammatory disease and excessive menstrual bleeding. Should not be used by persons prone to allergies to Asteraceae. With external use, immediate cessation of treatment is advised in the event of itching and inflammatory changes in the skin.

 

YELLOW DOCK ROOT

Rumex crispus

Caution is advised for individuals with a history of kidney stones.

 

YERBA MATE LEAF

Ilex paraguaiensis

Not recommended for excessive or long-term use. May be irritating to the digestive system.

 

YERBA SANTA HERB

Erdictyon glutinosum

Safe to consume when used appropriately.

 

YOHIMBE BARK

Corynanthe/Pausinystalia yohimbe

Avoid during existing liver and kidney diseases and in chronic inflammation of the sexual organs or prostate gland. Not recommended for excessive or long-term use. May potentiate pharmaceutical MAO-inhibitors and hypotensive drugs. Yohimbe is a nervous system stimulant that can produce unpleasant digestive and nervous system symptoms including nervousness, heart irregularities, headaches, tremors and insomnia.

 

YUCCA ROOT

Yucca spp.

Safe to consume when used appropriately

 

 

 

Back to Top of Page

 

 

© 2012 Cheryl's Herbs. All Rights Reserved.